1 // fstminimize.cc 2 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 // 15 // Copyright 2005-2010 Google, Inc. 16 // Author: riley (at) google.com (Michael Riley) 17 // Modified: jpr (at) google.com (Jake Ratkiewicz) to use FstClass 18 // 19 // \file 20 // Minimizes a deterministic FSA. 21 // 22 23 #include <fst/script/minimize.h> 24 25 DEFINE_double(delta, fst::kDelta, "Comparison/quantization delta"); 26 27 28 int main(int argc, char **argv) { 29 namespace s = fst::script; 30 using fst::script::FstClass; 31 using fst::script::MutableFstClass; 32 using fst::script::VectorFstClass; 33 34 string usage = "Minimizes a deterministic FST.\n\n Usage: "; 35 usage += argv[0]; 36 usage += " [in.fst [out1.fst [out2.fst]]]\n"; 37 38 std::set_new_handler(FailedNewHandler); 39 SET_FLAGS(usage.c_str(), &argc, &argv, true); 40 if (argc > 4) { 41 ShowUsage(); 42 return 1; 43 } 44 45 string in_name = (argc > 1 && strcmp(argv[1], "-") != 0) ? argv[1] : ""; 46 string out1_name = (argc > 2 && strcmp(argv[2], "-") != 0) ? argv[2] : ""; 47 string out2_name = (argc > 3 && strcmp(argv[3], "-") != 0) ? argv[3] : ""; 48 49 if (out1_name.empty() && out2_name.empty() && argc > 3) { 50 LOG(ERROR) << "Both outputs can't be standard out."; 51 return 1; 52 } 53 54 MutableFstClass *fst1 = MutableFstClass::Read(in_name, true); 55 if (!fst1) return 1; 56 57 MutableFstClass *fst2 = argc > 3 ? 58 new VectorFstClass(fst1->ArcType()) : 0; 59 60 s::Minimize(fst1, fst2, FLAGS_delta); 61 62 fst1->Write(out1_name); 63 if (fst2) 64 fst2->Write(out2_name); 65 66 return 0; 67 } 68
